10k is rated at 12v 9k is rated at 14v
Where does it say the 10.0k is rated at 12v? Because cj just posted that its rated at 10,000 watts x1 at 1ohm at 14.4v and that's what it sais on dc's websight. And the 9.0k is rated at 9,000 watts x1 at 1ohm at 14.4v